.login-center{
	width: 900px;
	height: 530px;
	border: 0px solid gray;
	margin: 100px auto; 
}
.layui-form{
	width:600px;
	margin:10px auto;
}
.layui-form-item{
	width: 500px;
}
.layui-btn{
	margin: 20px 50px 0px 50px;
}